Patent US3729513A successfully refreshed from Google Patents.
US3729513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tricyclo(4.3.1.13,8)undecane-4-one
Assignee: EIDP Inc
•
Filing: 1971-02-09
•
Granted: 1973-04-24
•
Expires: 1991-02-09
Abstract
Abstract TRICYCLO (4.3.1.3,8)UNDECANE - 4 - ONE, USEFUL AS AN INTERMEDIATE IN THE PREPARATION OF ANTI-VIRALL 4-AMINO- AND 4-AMINOMETHYL-TRICYCLO(4.3.1.13,8)UNDERCANES, IS PEPARED FROM 2-AMINOMETHYL - 2 - ADAMANTANOL. THE LATTER COMPOUND IS PREPARED FROM METHYLENE ADAMANTANE OR ADAMANTANONE.
Inventors
- 👤 G Berezin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:42
CPC Classifications
C; C07; C07C; C07C61/00; C07C61/12; C07C61/125; C07C61/135; C07C49/00; C07C49/385; C07C49/417; C07C49/423; C07C49/453; C07C2603/00; C07C2603/56; C07C2603/58; C07C2603/76; C07C2603/78
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |